Improvement in the manufacture of fuel from anthracite coal dust



g I @IIIIBD terms extent ffmz.

i) hf) EDWARD G. MARKLEY, OF BOROUGH OF SUN BURY, AN GEORGE H.

BARDWELL, OF PHILADELPHIA; PENNSYLVANIA. L Letters Patent No. 64,343, dated April 30, 1867.

- IMPROVEMENT IN THE MANUFACTURE OF FUEL FROM ANTHRAGITE GOAL DUST. v Q'. i "dilgc firlgchule rrfsmlr in in time new mm mm mahinn u m flge $31M.

TO ALL WHOM IT MAY CONCERN:

Bail-'5 known 1 V9,. EDWARD G. MARKLEY, of the borough of Snnbury, Northulnberland county, and GEORGE H. BA RDWELt, of the city of Philadelphia, and State of Pennsylvania, have invented or produced a new and original mode for the-manufacture of Refuse Anthrax and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying specimen: I

The na'tui'e'of our invention or production consists in taking of Pulvis anthrax of from eight y to ninety i per ccnt'., Aqua (Zz'stillata containing twenty per cent! of Resimz pnepa'rata, composed of due proportions of Pm: L

mlqm, exudations of bitumen, petroleum, potassa, nit-res, and starch; and which proportions are to be graduated according to the density of the anthrax, and which lfes-z'najn'rqmmm is to be brought to a boiling point at 210 Fahrenheit, and immediately thereafter to be thoroughly incorporated with the Pulm's a'iztkmz, and moulded into cubic blocks of from one to one hundred pounds each, subjected, at the same time. to a pressure of from one thouszind pounds to five tons to the square inch. i What we claim as our invention or production, and desire to secure by Letters Patent, is'- The improved anthracite block as above described and set out, made of the materials combined in substan 1 t1al.y the propoltions above set f'olth. E. G MARKLEY,

G. H. BARDWELL. Witnesses Jsiues BEARD, JOHN BOWEN }fo1 E. G. MARKLEY.

J. R. M c James $22 }i'or G. H, BARDWBLL. 

